Syringe.



' Patented Sept. 26,1899. J. a. CHANDLER. Y Y

$YRINGE.

(Application filed 1m; '24, 1394s.

Nov-lodel.)

"41' mm mm 00,, mono-um. wunmmu, cu.

UNITED STATE PATENT OFFICE.

JAMES G. CHANDLER, OF RAGINE, WISCONSIN.

svnmoe;

SPECIFICATION forming part of Letters Patent No. 633,805,-dated September 26, 1899.

Application filed December 24, 1898. Seriallln; '70 O,23'7. (No model.)

To aZZ whom, it rim/y concern;

Be it known that I, JAMES G. CHANDLER, a citizen of the United States, and a resident of Racine,in the county of Racine and State of Wisconsin, have invented certain new and useful Improvements in Syringes; and I do hereby declare that the following is a full, clear, and exact description thereof. 7

My invention hasfor its main object to provide a simple economical syringe by which irrigation of natural hum an cavities and open wounds may be had without wetting bed clothing under recumbent patients.

Therefore it consists in certain peculiarities of construction and combination of parts hereinafter particularly set forthwith ref- Fig. 5, a longitudinal section view of one.

form of nozzle applicable as part of the aforesaid apparatus; Fig 6, a detail partlysectional view indicated byline 6 7 in the fifth figure, and Fi 7, a similar view indi-v cated by line 7 6 in said fifth figure.

7 Referring by letter to the drawings, A B

represent receptacles, herein shown as a pair of parallel cylinders, having rear head-openings closed by caps A B, the latter being in water-tight screw-thread connection with said cylinders. The caps are preferably of the bulb or knob form shown to facilitate opening and closing of the cylinders. Interme-v diate of the cylinders and connected thereto by stay straps O are upper and lower barrels D E, in which pistons "F G are reciprocated, the rods F G of thesepistons being joined to a single hGJDGlQ'H HiS'ShOWH in Fig. 2. Diaphragms in the barrels D E are provided with apertures controlled by check-valves I' J,

these valves being so disposed that when one is opened incidental to reciprocation of pistons F G the other is forcibly held upon its seat. In rear of valve I the barrelD is connected by a pipe K with the cylinder A, and

another pipe L' leads frombarrel E in rear of valve J into cylinder B, the general assemblage being such that operation of the pistons F G exhausts air from the former'cylinder fantl forces air into the other cylinder, the latter being the one employed to contain fluid. Cylinder B is provided with an outletpipe M,

that is shown as terminatingin a nipple 19' Y parallel to another nipple c, that pertains to cylinder A, and slipped on these nipples are flexible pipes N O, that alsoconnect with nipples b 0, extending rearward from a cut-off plate P for passages d aim the shank Q of anozzle.

Fitted in the nozzle-shank isa central'pipe fin communication with the passage e, a spray-tip g in slip-fit on the latter pipe 'being'joined bywires h to a ring 11 in screw= threadconnection with said shank, the latter having a central recess surrounding pipe f the nozzle-shank, is a conical shell'of rubber or other flexible material, the rear end of same being fitted over an annular inner flange k of said shield.

The cut-ofif plate 'P is provided with an ap* erture m,.that, comes in and out ofregister with the nozzle-passage e, accordingly as there is movement of this plate on acpivotscrew it, engaging nozzle-shank Q, said aperture and passage being of the same diameter. Another aperturep in the cut-off plate diametrically opposite the one aforesaid is likewise brought in and out of register with the nozzle-shank passage d; but the latter being elongated at its rear end adjacent to said plate it will remain open after this plate has been swung far enough to close the former nozzle-shank passage. Therefore it requires further movement on the part of the aforesaid plate to close both passages. Indicatormarks on the nozzle-shank shield J and a pointer r, projecting from the periphery of the cut-ofi plate, as shown in Figs. 6 and 7,

serve the operator to tell when both nozzlepassages are open or closed or when the inlet-passage is closed and the outlet-passage still open.

The nozzle herein described is designed for use as part of my syringe when vaginal irrigations are necessary, and its general construction is designed to obtain the best results with the least discomfort to the patient. However, various nozzles may be employed as the nature of a wound or human cavity may require, provided that such nozzles are constructed with reference to flow and return of liquid through different channels, and various means may be devised for starting and stopping the circulation of the liquid used in treatment.

The cylinder B is herein shown provided at its front end with a conical recess for reception of the nozzle above specified when the apparatus is not in use; but this is a mere matter of convenience that does not in any way affect the generic scope of my invention.

In practice the pistons F G are operated in the barrels'D E to create vacuum in cylinder rocations of said pistons being sufficient until the liquid then under pressure is permitted to flow, after which the'operation of said pistons is continued as long as necessary. The-liquid under pressure having been permitted to flow from cylinder B through the nozzle into a cavity or wound, it is drawn back by suction into the cylinder A, it being understood that the mouth of said cavity or Wound is properly closed about said nozzle, so as to be air and water tight. Upon (30inpletion of the operation just described the inlet-passage of the nozzle is cutoif and the outlet-passage left open, so that the cavity or wound under treatment may be thoroughly drained before said nozzle is removed. Cap A being removed, the liquid accumulated in cylinder A may be readily emptied.

It is obvious that the air-supply pump, cylinder B, and a nozzle in connection with said cylinder may be utilized as a substitute for the ordinary fountain-syringe, this construction and arrangement of parts being within the scope of my invention, the advantage being that the pressure upon the injecting liquid may be readily increased or diminished at will.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A syringe comprising a pair of receptacles having openings provided with air-tight closures, means for exhausting air from one receptacle and creating air-pressure in the other, a nozzle having flow and return channels, a pipe connecting the flow-channel of the nozzle with the receptacle in which airpressure is created, and another pipe connecting the return-channel of said nozzle with the receptacle from which air is exhausted.

2. A syringe comprising a pair of receptacles, having openings provided with air-tight closures, means for exhausting air from one receptacle and creating air-pressure in the other, a nozzle having flow and return chan:

nels, a pipe connecting the flow-channel of the nozzle with the receptacle in which airpressure is created, another pipe connecting the return-channel of said nozzle with the re ceptacle from which air is exhausted, and means controlling the opening and closing of said nozzle-passages.

other pipe connecting the return-channel of 7 said nozzle with the receptacle from which air is exhausted. r

4. A syringe comprising a pair. of recepta cles having openings provided with air-tight closures, means for exhausting air from one receptacle and creating air-pressure in the other; a nozzle having a rear shield and its shank provided with flow and return passages the latter passage being in communication with a longitudinal recess in said shank, a pipe fitting the nozzle-shank in register with the flow-passage of same central of said recess, a spray-tip in connection with the outer end of the pipe'and constituting part of a conical cage about the forward portion of said pipe, a conical flexible shell supported intermediate of the rear end of the cage and said shield, an apertured plate in pivotal connection with the rear of the aforesaid nozzle constituting a cut-off for said passages, a flexible pipe connecting the receptacle in which air-pressure is created with a nipple extension of the flow-aperture in the cut-off plate, and a similar pipe connecting the receptacle from which air is exhausted with a nipple extension of the return-aperture in said cut-off plate.

In testimony that I claim the foregoing I have hereunto set my hand, at Racine, in the county of Racine and State of Wisconsin, in the presence of two Witnesses.

JAMES G CHANDLER.

Vitnesses:

W. F. J AGKSON, W. VINCENT ADAMS.

IIO 

